癌症是人类死亡率最高的疾病,吸烟致癌问题经过多年争论,现在已有定论。1962年英皇家内科研究所根据大量资料作出结论:“吸烟是肺癌的重要病因”。1964年美外科医生咨询委员会声称:“吸烟引起肺癌”,这一结论是从15个以上国家进行的100多个调查中作出的。1971年又进一步阐述:“吸烟和患癌率间数量上的并 Cancer is the disease with the highest human mortality rate. After years of controversy over the carcinogenicity of tobacco, it is now conclusive. 1962 Royal Institute of Internal Medicine based on a large number of data concluded: “Smoking is an important cause of lung cancer.” The 1964 Advisory Board of the American Surgeons claims that “smoking causes lung cancer,” a conclusion that has been drawn from more than 100 surveys conducted in more than 15 countries. Further elaborated in 1971: "The quantitative comparison between smoking and cancer rates